On Jan, 1946 she was taken to Moville. U-3514 was held in reserve in case that one of the other type XXI-boats given to the Soviets did not reach Russia intact. On 7 Feb, 1946 the order came to sink U-3514 as well. On 9 Feb, she left Moville and during the morning of 12 Feb reached the planned position. At 09.36 hours HMS Loch Arkaig started the scuttling. They needed some 30 minutes using 4" guns, "Shark" depth-charges and "Squid" Missiles before U-3514 found her last position in 56.00N/10.05W at 10.04 hours

On Feb 12. 1946 at 1004hrs. U-3514 received the distinction of being the
last U-Boat sunk during Operation Deadlight.